The correct option is D tangential force
A tangent is a straight line that meets a circle at only one single. When there is no centripetal force acting inwards towards the center, the body tends to follow its path of motion in a straight line and meets the circular path at one and only one point. The force that causes the object to move along a tangent is called tangential force .
⇒ Circular path with center O.
Line AB is thy tangent that meets the circular path only at point P, causes the object to the move in a straight line